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    <meta charset="UTF-8">
    <meta name="viewport" content="width= , initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0 0 50px 0;
        }
        .W1{
            width: 200px;
            height: 200px;
            background-color: rgb(42, 74, 255);
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        .W2{
            width: 200px;
            height: 200px;
            background-color: rgb(239, 255, 11);
        }
    </style>
</head>
<body>
    <div class="W1"><a href="https://www.bilibili.com">1</a></div>
    <div class="W2"><a href="https://www.kuaishou.com">2</a></div>
</body>
</html>